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\bibitem{Chen_etal2010} {\textquotedblleft}\textit{Symmetry and electronic states of Mn$^{2+}$ in ZnS nanowires with mixed hexagonal and cubic stacking}{\textquotedblright}. Chen L, Kirilenko D, Stesmans A, Nguyen XS, Binnemans K, Goderis B, Vanacken J, Lebedev O, Van Tendeloo G, Moshchalkov VV, Applied physics letters \textbf{97}, 041918 (2010).   http://doi.org/10.1063/1.3475017

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